Walker 211-2015 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor Overview

Walker 211-2015 is a sensor-only engine coolant temperature sensor built to report cooling-system temperature data to the ECM in real time. For Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac CT5 applications, accurate coolant temperature input supports fuel delivery, ignition timing, cold-start enrichment, and fan control.

Walker Products Sensor Only line focuses on direct replacement sensors that match OE resistance values, thermal response, and signal output for factory-style operation.

Key Features

• Engine coolant temperature sensor for ECM temperature monitoring
• Pin terminal design with 2 terminals
• Female circular connector shape
• Direct-fit replacement for factory sensor locations
• Built with heat-resistant materials for coolant and vibration exposure
• Walker 211-2015 sensor-only configuration

Detailed Product Information

This Walker engine coolant temperature sensor is engineered for accurate temperature reporting across a wide range of GM vehicles, including Chevrolet Corvette, Silverado, Tahoe, GMC Sierra, Yukon, and Cadillac Escalade applications. The sensor helps the ECM adjust engine operation based on coolant temperature, which is critical for drivability, emissions control, and consistent fan operation. Part number 211-2015 is built for OE-style integration and direct replacement service.

This part cross-references DENSO Auto Parts 4221 and Standard Ignition TX247 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to coolant temperature signal faults
• Incorrect temperature gauge or ECM temperature readings
• Hard cold starts or rough cold-start operation
• Cooling fan operation that does not match engine temperature
• Fuel mixture or ignition timing concerns tied to temperature input

Installation Notes and Fitment

Install as a sensor-only replacement; wiring harness is not included. Verify the connector style before installation: female circular connector with 2 pin terminals. Fitment includes 2022-2023 Cadillac CT5; 2021-2023 Cadillac Escalade and Escalade ESV; 2022-2023 Chevrolet Camaro; 2021-2023 Chevrolet Corvette, Express 2500, Express 3500, Silverado 1500, Silverado 2500 HD, Silverado 3500 HD, and Tahoe; 2021-2023 GMC Savana 2500, Savana 3500, Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, Yukon, and Yukon XL; 2022 Chevrolet Silverado 1500 LTD; 2022 GMC Sierra 1500 Limited; 2019-2020 Cadillac CT6; 2020 Chevrolet Corvette; 2018-2020 Chevrolet Express 2500 and Express 3500; 2016-2020 Chevrolet Silverado 1500; 2017-2020 Chevrolet Silverado 2500 HD and Silverado 3500 HD; 2018-2020 GMC Savana 2500 and Savana 3500; 2016-2020 GMC Sierra 1500; 2017-2020 GMC Sierra 2500 HD and Sierra 3500 HD; 2017-2019 Chevrolet Cruze; 2018-2019 Chevrolet Equinox; 2018-2019 GMC Terrain; and 2013-2015 Chevrolet Spark. Some applications note an included O-ring in the fitment data.

Quality Assurance

Walker Products engineers this sensor to match OE specifications for resistance, thermal response, and signal output so it integrates with factory ECM systems. Durable, heat-resistant construction is used to withstand coolant exposure, vibration, and temperature swings during normal operation.